R Observatory: Metrics for schumaker version 1.2.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

schumaker

1.2.2

Schumaker Shape-Preserving Spline

1packages depend

4Kdownloads / year

68.8%test coverage

13/13checks pass

Overview

About

Maintained by Stuart BaumannFirst published 2015-08-088 releasesCRAN page ↗

This is a shape preserving spline doi:10.1137/0720057 which is guaranteed to be monotonic and concave or convex if the data is monotonic and concave or convex. It does not use any optimisation and is therefore quick and smoothly converges to a fixed point in economic dynamics problems including value function iteration. It also automatically gives the first two derivatives of the spline and options for determining behaviour when evaluated outside the interpolation domain.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("schumaker", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-schumaker

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-schumaker

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-schumaker

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.0 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.48

68.8%

Coverage · measured lines

100%

Documentation · exports

0

Dependencies · direct

Check history

OK2026-08-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-06-08
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 87%
Return-value docs: 67%
References docs: 29%

Downloads

4K

CRAN downloads in the past year

Rank #13,508 · ~11/day · ~336/mo

Releases R versions

Daily download trend is not available in this view yet.

18130 days

76190 days

4K1 year

Compare downloads with other packages →

Also on136 r2u14 autocran61 c2d4u

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (3)

testthat knitr numDeriv

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

FixedPoint

Code & Tests

People & History

People (2)

Maintainer (1)

Stuart Baumann

Author, Maintainer

Authors (2)

Stuart Baumann

Author, Maintainer

Margaryta Klymak

Author

Package Timeline

8 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
1.2.2Latest
2026-01-23 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.2.1
2021-09-10 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.2
2019-11-13 · diff ↗
R
R 3.6.0 released · 2019-04-26
1.1
2018-06-23 · diff ↗
R
R 3.5.0 released · 2018-04-23
1.0
2017-05-21 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03

Show 4 earlier events

0.3
2016-02-29 · diff ↗
0.2
2016-02-27 · diff ↗
0.1
2015-08-08
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-08-08
Total releases: 8 / 11 yrs
License: MIT + file LICENSE OSI
Download size: 134 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Numerical Mathematics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("schumaker")

Format

Baumann, S., & Klymak, M. (2026). schumaker: Schumaker Shape-Preserving Spline (Version 1.2.2) [Computer software]. https://doi.org/10.32614/CRAN.package.schumaker

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for schumaker version 1.2.2 [Data set]. HJJB, LLC. Data release v2026-08-15. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-15, which the citation names so these numbers can be found later. More on citing and the projects behind them.

Report a problem with this page →